Piiess for zincographic printing



UNITED STATES PATENT `(`)FFICE.`

G. H. KORFF, OF HOBOKEN, NEW JERSEY.

PRESS FOR ZINCOG-RAPHIC PRINTING.

Speccation of Letters Patent No. 20,276, dated May 18, 1858.

To all whom it may concern:

Be it known that I, G. I-I. KORFF, of Hoboken, in the county of Hudson and State of New Jersey, have invented a new and Improved Press for Zincographic Printing; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making part of this specication, in which- Figure 1 is a side view of my improvement. Fig. 2 is a section of the same, taken in the line a: m, of Fig. 1. Fig. 3 is an end view of the printing cylinder, pressure rollers, and two of the ink-rollers.

Similar letters of reference denote like parts in the three figures.

This invention consists in the employment or use of a cylinder provided with a zinc face or periphery on which the design is drawn, and having a series of adjustable ink and wet rollers bearing against its periphery when the press is in operation, the ink and wet rollers as well as the'cylinder being peculiarly constructed and used in connection with pressure and feed rollers the whole being arranged as hereinafter described whereby a rotary power press is obtained, one capable of working with comparatively great rapidity and in a perfect manner.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A, represents the frame of the press, which is constructed of two uprights a, a, divaricated at their lower ends and connected by traverse bars b, to form a firm base. The upper ends of the uprights a, a, are connected by a cross rod c. The frame may be constructed of cast iron, at least that will probably be the material generally used for this purpose.

B is a cylinder the journals of the shaft of which have their bearings in the uprights a, a. This cylinder is constructed of plaster of Paris (Z, molded or formed around sheet metal tubes e, parallel with the shaft f, of the cylinder, and a face or periphery of Zinc g, is placed over the plaster of Paris. The construction of this cylinder will be well understood by referring to Figs. 2 and 3. It will be seen that the tubes e give strength and lightness to the cylinder. It is necessary to have a firm cylinder or one that will not yield or give to the pressure to which it may be subjected, and at the same time or paper, it being provided with a metal shaft h. The ends of the shaft 71., of this roller are not fitted in bearings but between vertical guides z', i, which are attached to each side of the frame A, see more particularly Fig. 1.

Directly below the roller C, another roller i i D is placed. This roller D is constructed of cast iron and its shaft y', has its journals fitted in the bars k, the lower ends of which are notched and fitted 0n projections Z, attached to a shaft E, the ends of which are placed in elastic bearings m, fitted between the lower ends of the guides z', z'. One end of the shaft E projects beyond the side of the frame and a hole is made in it to receive a hand lever by which the shaft E may be turned, and the roller D, in consequence of its bars 7c resting on the projections l, may be forced upward and made to press the roller C, against the periphery of the cylindirection toward the front of the machine,

as indicated by the arrow in Fig. 1, so that the bars 7c, c, may pass down in recesses made in the guides i, i; see red lines in Fig. 1. ,j F, represents a roller which may be constructed of wood or other suitable material. This roller F has its bearings in the ends of springs Gr, G, which are attached one to each upright a, and on each end of the shaft mi, of roller F, a roller n, is placed loosely.

I-I, is a roller precisely similar to F. This roller has its bearings in the ends of springs roller C, but it is prevented from touching it by the springs Gr, G, which have a tend- 'f ency to keep it elevated a little above the said roller C. 'Thesprings' 0, '0, of the roller H keep said roller quite near roller F, but not in direct contact with it.

To each upright 0;, and at their inner sides, concentric with the cylinder B, a circular disk I, is attached. VIo these disks radial rods p, are attached, as shown in Fig. l so as to form-guides g, for the bearings r, s, of the rollers J, J K,y K. 'Ihe rollers J 'are inking rollers. They are constructed of plaster of Paris molded or formed around sheet metal tubes precisely similar to the cylinder B, but covered with leather instead of zinc. Five rollers J are shown in Fig. l, but more or less may be used as desired. The rollers J are rather larger in diameter than the rollers J, but are constructed precisely similar with the exception that they have no leather covering, the rollers J having merely a coating of oil. Thesek rollers J are the ink-distributing rollers, Vthe ink being placed on them and from them it is evenly placed on the rollers J The rollers J are made to press on the rollers J, by means of springs t, which are fitted in design is drawn on the Zinc g, of the cylinthe rims o.

the guides g, the strength'of the springs bet ing graduated as required by means of screws u, which pass throughrims fv, which connect the ends of the' rods p. VThe rollers K, K, are constructed precisely similar to they rollers J, J and provided with like springs, &c.; there is no difference in arrangement, but instead of being covered with leather they are covered Ywith flannel or other suitable substance capable of absorbing or retaining moisture.

To each disk I, at the outer sides, rods L are pivoted. The outer ends of these rodsv v J have the ink placed upon them' and may if desired be taken fromV their bearins, properly charged, and replaced therein. T e

der B, and the paper (shown in red) is placedin a pile `on the lfeed board VM. Motion is given the Yroller D, by any proper means and the shaft E,'is so turned as to cause the roller C, to bear against the cylinder B. The roller C, rotates the cylinder B, which in'turn rotates the ink-rollers J, and Wet rollers K, and these again rotate their respective rollers J, K. The rollers J soon have ink properly distributed over them, and the'desig'n'on thezinc g, Ais charged with ink thereby. The rollers K are charged with moisture from the rollers K, the latter receiving itby a dripror in any other way proper. The rollers K keep the blank surface of the cylinder B, or the Zinc g, moist, so as to repel the ink vas usual, so that the drawing only will be charged or inked. The paper is fed one sheet at a time underneath the roller F; and as the cylinder B rotates, the-proj ecting curved rodsl N will strike the Vrollers u, a, on the shaft of the roller F.

Said roller F will be thus depressed and brought incontact with the roller H, and

also with roller C, and the edge of the sheet will be caught by said rollers and drawn lthrough or between them and carried to the bite of the cylinder B, and the roller C, between which it is drawn and subjected to suflicient pressure to receive the impression of the design on the cylinder B. The rollers F, H, as soon as the rods N have passed over the rollers n, and the sheet is caught by the bite of cylinder B, and roller C, are made to assume their original position by the springs G, o. The rollers J do notV require to be inked often, for when they are once charged they will not require replenishing oftener than once iny every four hours or about that. Y Either ofthe ink rollers J, or wet rollers K, may be thrown 'out free from 'the cylinder B by actuating its respective rod L, so that the inkingand moistening may be regulated as desired, and all the rollers may be thrown out simultaneously from thercylinder B, when desired, by operating the rings L, at both sides of the machine, t the two rings being connected by a crossv rod LX.

Y By this invention the hitherto slow'process of zincographic printing will be greatly expedited.

rlhe machine may be driven Vby steam or other' power and it may be manipulated with equally as great facility as any of the pow-er typographical presses in use with which I am acquainted. Having thus described my invention, what` I claim as new, and desire to secure by Letters Patent, is Y l. The cylinder B, in combination with the inking rollers J, J and vmoistening rollers K, K, when arranged as shown, viz. the rollers J, K, having their bearings connected with rods L, and used in connection with the adjustable rings L, so that either of the rollers J, K, may be moved out free from the cylinder B, or all moved simultaneously as maybe desired. v

2. In combination with the cylinder B and rollers J, J K, K, I claim the pressure rollers C, D, in connection with the bars 7c, 7c, and shaft E, provided with projec-v tions Z, Z, for the purpose of producing the bite, or subjecting the paper to the proper the cylinder B and rollers J, J', K, K, as pressure between the cylinder B and roller C. herein shown and described, viz. having 3. The feed rollers F, H, fitted in elastic plaster of Paris ol, molded' around tubes e, bearings G, o, and arranged relatively With so as to obtain the necessary strength and 5 each other, the pressure roller C, feed board inflexibility with a requisite degree of light- 15 M, and cylinder B, as described, whereby, ness.

with the aid of the curved rods N, on the G. H. KORFF. cylinder B, the blank sheets are fed between Witnesses: the cylinder B and roller C. A. R. HAIGHT,

10 4. I claim the peculiar construction of XV. TUSCH. 

